Beckhoff CU8800-0010 Manual do Utilizador descarregar pdf (Página 79)

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TwinCAT

TwinCAT PLC run-time is available. Program

modiﬁ cations are implemented via net-

work-capable powerful communication

with the run-time system. Programming

can be done

– locally,

– via TCP/IP or

– via the ﬁ eldbus (BXxxxx and BCxxxx).

TwinCAT NC – Motion Control

on the PC

A software NC consists of:

– positioning (set value generation and

position control)

– integrated PLC with NC interface

– operating programs for commissioning

purposes

– I/O connection for axes via ﬁ eldbus

With TwinCAT NC, the position controller is

calculated on the PC processor as standard.

It exchanges data cyclically with drives and

measurement systems via the ﬁ eldbus.

TwinCAT NC I – axis interpolation

in 3 dimensions

TwinCAT NC I (interpolation) is the NC

system for linear and circular interpolated

path movements of axis groups each

involving two or three drives.

The system includes interpreter, set

value generation and position controller.

PLC functionality is integrated, as is the

connection of the axes with the ﬁ eldbus.

TwinCAT CNC – the software CNC

for toughest requirements

TwinCAT CNC expanded TwinCAT NC I with

classic CNC features: Up to 32 inter polating

axes and comprehensive co ordinate and

kinematic transformations are possible.

Parts programming is carried out according

to DIN 66025 using high-level language

extensions. TwinCAT CNC can operate

with up to 64 axes or 32 path axes and

con trolled spindles that can be distributed

across up to 10 CNC channels. In a CNC

channel, up to 32 axes can be interpolated

simultaneously, en abling even the most

difﬁ cult motion tasks to be solved. Apart

from the classic linear, circular and helical

interpolations, TwinCAT CNC offers conve-

nient spline interpolation, optionally based

on Akima or B-splines. Real-time trans-

formations enable complex machine kine-

matics to be realised without problem.

The TwinCAT Software System turns any compatible PC into

a real-time controller with a multi-PLC system and NC/CNC

axis control. At the same time, TwinCAT integrates the program-

ming environment for all Beckhoff controllers: from high-end

Industrial PC control to embedded controller.

TwinCAT replaces conventional PLC and NC/CNC controllers

as well as operating devices with:

The Windows Control and Automation Technology

– open, compatible PC hardware

– embedded IEC 61131-3 software PLC, software NC and

software CNC in Windows NT/2000/ XP, NT/ XP Embedded, CE

– programming and run-time systems optionally together

on one PC or separated

– connection to all common ﬁ eldbuses

– PC interfaces are supported

– data communication with user interfaces and other

programs by means of open Microsoft standards

(OPC, ActiveX, DLL, etc.)

TwinCAT architecture

The TwinCAT system consists of run-time

systems that execute control programs in

real-time and the development environ-

ments for programming, diagnostics and

system conﬁ guration. Any Windows pro-

grams, for instance visualisation programs

or Ofﬁ ce programs, can access TwinCAT

data via Microsoft interfaces or can execute

commands.

TwinCAT PLC – the central pillar of

automation software

Conceived as a pure software PLC, TwinCAT

PLC allows up to four virtual “PLC CPUs”,

each running up to four user tasks, on one

PC. The PLC program can be written in one

or more of the languages provided for

in the IEC 61131-3 standard:

– IL (Instruction List),

– LD (Ladder Diagram),

– FBD/CFC (Function Block Diagram),

– SFC (Sequential Function Chart) and

– ST (Structured Text).

TwinCAT PLC running under the Windows

NT/2000/XP operating systems includes

both the programming environment

and the run-time system, so that an

additional programming device is not

required. Under the CE operating system

and the embedded operating systems

for the series BX and BC controllers, only

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